Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f272fb2dd33bed8…

MALICIOUS

PDF

74.0 KB Created: 2021-01-12 12:22:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: bd01fea82426480a96745c690efb2a33 SHA-1: 20801e6c26408f17d3bf75d48aad8982307c9adf SHA-256: 5f272fb2dd33bed8f56a4aadaa367245af0fcd146beae387b493f5f926414bcf
214 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of embedded links, many of which point to external PDF files hosted on link farm services, and one directly links to a known malicious redirector. The document body, though heavily obfuscated, contains text related to a driver's permit test, suggesting a lure for phishing or malware distribution. The presence of numerous external links indicates an attempt to obscure the ultimate destination and potentially distribute further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://cctraff.ru/aws?utm_term=drivers+ed+permit+test+study+guide+florida In PDF document text
    • https://wufujaxuwagax.weebly.com/uploads/1/3/4/4/134400484/larulidiririwob-pazafado.pdfIn PDF document text
    • https://cdn.sqhk.co/rabovukuvi/YibCKhg/vpn_private_app_free_download_for_android.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390374/normal_5fac1bfa683a9.pdfIn PDF document text
    • https://cdn.sqhk.co/susotizakaxe/9jhWaic/walowipiti.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387589/normal_5fa74b84bed7b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465548/normal_5fad44a17e1e5.pdfIn PDF document text
    • https://cdn.sqhk.co/kefexunas/haSNWgg/xojepujanilanukarevufak.pdfIn PDF document text
    • https://kefonajivivuz.weebly.com/uploads/1/3/0/7/130776591/5504427.pdfIn PDF document text
    • https://nixunirebexif.weebly.com/uploads/1/3/0/7/130776125/gajefepur.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393908/normal_5fa73e74006cf.pdfIn PDF document text
    • https://viramerobudob.weebly.com/uploads/1/3/1/4/131483281/4348028.pdfIn PDF document text
    • https://rawiranuxox.weebly.com/uploads/1/3/4/6/134618620/dalopixukatekow.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d631.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD631 5296 bytes
SHA-256: a23a6fecf6a89db527e014b332afcf4fb619acb58c83f9359effca45f1e397c5
font_01_sfnt_off0000e84e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE84E 10556 bytes
SHA-256: e17462a992e0858c701bb9de801b227b5221922d933116c8b70ecffe05432039
font_02_sfnt_off00010c74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C74 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

Open this report in the interactive analyzer, or submit your own file for analysis.